Apparatus



(No Model.) 4 Sheets-Sheet 1.

G. F. BOGEL. I LEATHER ROLLING APPARATUS.

\ I l l I II Patented Oct. 15,1895.

(No Model.) 4 Sheets-Sheet 2. G. F. BOGEL.

(No Model.) 4 Sheets-Sheet 3.

G. P. BOGBL. LEATHER ROLLING APPARATUS.

4 Sheets--Sheet 4.

(No Model.) .4

G. F. BOGEL. LEATHER ROLLING APPARATUS. No. 547,762. Patented Oct. 15,1895.

' UNITED STATES PATENT OFFICE.

. GEORG FERDINAND BOGEL, OF ALTONA, GERMANY.

LEATH ER-ROLLLNG APPARATUS.

SPECIFICATION forming part of Letters Patent No. 647,762 dated October 15,1895. Application filed March is, 1895. Serial No. 541,620. (No model.) Patentedin Germany Jul 4,1894, 1%. 79.593.

To all whom it may concern;

Be it known that I, Gnono FER INAND Bo- GEL, a subject of the King of Prussia, Ger: man Emperor, and a resident of Altona, Germany, have invented certain new and useful Improvements in Leather-Rolling Apparatus, (for which I have obtained a patentin Germany, No. 79,593, dated July 4, 1894,) of which the following is a specification.

Leather-rolling apparatus with elastic carriages as hitherto constructed are open to the Objection that they do not workwith a con: stant or uniform pressure, because the unevenness of the material being rolled causes at one time a greater and at another time a less tension of the springs, therebyincreasing or reducing the working pressure. Furthermore, with such rolling apparatus there is a continual swaying or surging of the table, according as the carriage is working on the right-hand or on the left-hand half of the path of the rolls, so that either the table or the framing is liable to' be bent or broken or there is produced an injurious vibration of the buildingin which the machineis situated. Moreover, the driving-belt is subjected to great wear in consequence of its running in a fork, which is shifted first to the fixed pulley and then to the loose pulley, and vice versa, the belt is caused to jump reversing operation makes an unpleasant noise. A further disadvantage is that when the operator has to roll the hoofs or the heads of a skin, in which case a complete passage along the path of the rolls is not necessary, he is obliged with one hand to guide the leather underneath the roll and with the other to reverse with a comparatively great exertion of force in consequence of the usually inconvenient position of the reversing-lever.

Now the present invention has for its ob-- ject to obviate these drawbacks and to provide a rolling apparatus which shall work with any desired but always uniform pressure, shall be adapted to be set up at any desired spot without damaging the building wherein it is placed,and in which, while using one belt and one belt-pulley, the roll-carriage can be moved to and fro and, can-be reversed with a small expenditure of power in any desired position, because the operator hasonly violently, and the to turn the reversing-lever,whereupon the reversal is automatically effected by the carriage. t In the accompanying d rawings,.Figure l is a side elevation showing a construction of rolling apparatus according to this invention.

Fig. 2 is a section on the line A B of Fig. 1.

Fig. 3 is an end elevation, the belt-pulley being omitted. Fig. 4 is a detail elevation of the'mechanism for pressing the table upward; Fig. 5, a plan thereof; --Fig. 6, a section on line C D, Fig. 5. Fig. 7 is an elevation of the shifting mechanism, and Fig. 8,a plan thereof. I

The-lettera represents the frame of the machine, in which is journaled a screw-spindle b. This spindle is engaged by a nut .m', adapted to be moved by the revolution of the spindle and forming the support for a recip- 7o rocating carriage d. This carriage is provided at its lower end with a pressure-roller c and at its upper end with two pair of wheels n, that engage the hanging track 0'. Below the carriage is arranged a table f, which serves 7 5 to receive the leather to be pressed and which restsupon two toggle-levers g. These levers are connected by rods i 0 and'yokes 10 with nuts r, that engagea right-and-left screw h. The nuts are furthermore pivotally connected .to arms q. To the screw h is secured tightlyby key p'a lever l, oarryinga movable weight m, that may be adjusted by a screw, hand-wheel, or in other manner. The weight m has a tendency to draw the lever ldown and to consequent] y revolve the screw h. The revolution of screw it will tend to draw the nuts 'rtogethcr, and the latter, by-yokes i k and rods '6 It, will stretch the toggles 9, so. as to hold the table f .with auniform pressure against the rollerc. The to-and-fro movement of the roll-carriage is effected by means of -a single belt passing over the belt-pulley t. For. this purpose a fluted roll 0 is mounted on the shaft r of the belt-pulley, while another and corresponding-fluted roll 19 is fixed on asecond shafts, which is carried in the same hearing. The outer portions of these-fluted rolls are always in engagement, while their middleportions are alternately (according to the position of the bearing q) brought into engagement with a fluted roll n, fixed on the screw spindieo, so as to rotate the said flutoti roll 11- either in a z=ight-hahd or in a ieft-hami direction. i;

In order to allow of the alternate engagemeat of 0 or of p with n, the bedrihg qis made movabie by bein'g conueoted to a screw-Spiro dia "u, whioh is arranged in a bracket u-of the framing and can be shifted'bytpart-ialiy rotating a lever 10, which is provided with a cor responding female screw-thread and-is proveuted from moving axially by means of projections or stops 3 on the braokotj, This partial rotation of the lever and the oonse qusnt'shifting oi the bearing q are produced automatically by the roll-carriage at the end of the roll-path. It oa'i aiso be efieotedby the mil-carriage in. any position 013 the lat ter after the operator has rotated the revers .ing-lover. For this porposothero is-ari'angod parallel with the screw-spindle o, and so as to be capo-bio oimovamont in the flamingo, a rod 2, which is provided with loose collar s or rings a: and is embr'aoedlsy a kiayhoIe-slot in an upper 'extez'ision go? the t'aan iage. One

end oi this rod'isformod' aoa, round; toothed melt and gears with a, toothed are a", on whose axle b there is fixed a crank o, which is com noctod to'the lei-"er w cg-means of the guidinrod'd. In cider to enable the reversing oporation to be ofiectodin ooydesix odposition of the roll-omriage,the rod 2 is pr-Qvid edwith a number of nosesor projections f', ot er which the upper oxtooaioo of tho oaiiriage is normally adapted-to slide by means ota suitable x'eoessg' form'edin it; but ogairis't which noses'or projoo ions f thefoxt-onoion of the carriage strikes when tho rot; is rotzgtod out of its ordinary position; Ia'orderto enable this rotation to oeofiectd, thatond of-z whiqh is not formed as a toothed raokis formed with a square portion h,'over which a leVBILi' is placed, This lever 41. is connected with a.

troadle Z by means of suitable rods and bent levers kt Ic1aim- V J 1. The "combination inra leather rolling apparatus of a, work table with ai'pair of toggle levers, wo horizontal arms connecting said 1ovets, nuts connected tosaid arms, a right and loft'sorew engageli by tho-hots; a levet'l-keyed to the screw,'an'd a-s'liiiixig woight supported by theiover, substantiaily asopgacifiod. j 2. In, a leather roiling apjparatus tho-corp fluted rollol s o, p, hung inxsaid bearing, a roller'mfixed'to spindle b, and adapto'd'tobo' ,engagedby oi'tho-r oftho ioliox 'siotp, Substan- "oination of a recipiooating oarriago'having a standard provided iwith okay hole -s'1o'ft; with .a rocking rod 2, passing through said slottind havi'fig projections f a ud-cf-ollar as; mochah bj 'said are, substantially as doscribed. V

Signed at Hambuf'ggin.Germany this 126th .GEQRG FERDINAND. BOGEL. Wi'tnessos v I MAX Fooooor; MAX VON Bwmsxi.

' bioation of a' rociprooiiti ngcaqx iage'haviog a driving spindle b, witha, uiova'blo boating q, 

